Coherence*Web on GlassFish Server Issues

Question

Hi!
We are using Coherence 3.7.1.8 in our application in GlassFish 3.1.2 both as application cache and for storing session data (Coherence*Web) so it can be shared between multiple EARs and App server instances. Session data sharing between EARs in the same container works fine, but when we try to share session data between application server instances the server stops responding and has to be restarted. The only thing we get on the log is this exception:
#|SEVERE|oracle-glassfish3.1.2|com.tangosol.coherence.servlet.ParallelReapTask|_ThreadID=169;_ThreadName=Thread-2;|An exception was thrown while reaping a session.
com.tangosol.coherence.servlet.commonj.WorkException: Work Failed.
  at com.tangosol.coherence.servlet.commonj.impl.WorkItemImpl.run(WorkItemImpl.java:167)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
  at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.ClassCastException: com.tangosol.coherence.servlet.SplittableHolder cannot be cast to com.tangosol.coherence.servlet.AttributeHolder
  at com.tangosol.coherence.servlet.AbstractHttpSessionModel.readAttributes(AbstractHttpSessionModel.java:1815)
  at com.tangosol.coherence.servlet.AbstractHttpSessionModel.readExternal(AbstractHttpSessionModel.java:1735)
  at com.tangosol.util.ExternalizableHelper.readExternalizableLite(ExternalizableHelper.java:2042)
  at com.tangosol.util.ExternalizableHelper.readObjectInternal(ExternalizableHelper.java:2346)
  at com.tangosol.util.ExternalizableHelper.deserializeInternal(ExternalizableHelper.java:2747)
  at com.tangosol.util.ExternalizableHelper.fromBinary(ExternalizableHelper.java:263)
  at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.partitionedService.PartitionedCache$ConverterFromBinary.convert(PartitionedCache.CDB:4)
  at com.tangosol.util.ConverterCollections$ConverterMap.get(ConverterCollections.java:1656)
  at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.partitionedService.PartitionedCache$ViewMap.get(PartitionedCache.CDB:1)
  at com.tangosol.coherence.component.util.SafeNamedCache.get(SafeNamedCache.CDB:1)
  at com.tangosol.net.cache.CachingMap.get(CachingMap.java:491)
  at com.tangosol.coherence.servlet.DefaultCacheDelegator.getModel(DefaultCacheDelegator.java:122)
  at com.tangosol.coherence.servlet.AbstractHttpSessionCollection.getModel(AbstractHttpSessionCollection.java:2288)
  at com.tangosol.coherence.servlet.AbstractReapTask.checkAndInvalidate(AbstractReapTask.java:140)
  at com.tangosol.coherence.servlet.ParallelReapTask$ReapWork.run(ParallelReapTask.java:89)
  at com.tangosol.coherence.servlet.commonj.impl.WorkItemImpl.run(WorkItemImpl.java:164)
  ... 3 more
We tried to restrict the shared session data by implementing a custom SessionDistributionController, but according to the documentation, this feature requires coherence-sticky-sessions optimization to be enabled and this last one requires coherence-session-member-locking to be enabled. This led us to the following error:
#|SEVERE|oracle-glassfish3.1.2|org.apache.catalina.connector.CoyoteAdapter|_ThreadID=202;_ThreadName=Thread-2;|PWC3989: An exception or error occurred in the container during the request processing
java.lang.IllegalStateException: attempt to exit session VhSnfqkcwAza when it was not owned
    at com.tangosol.coherence.servlet.AbstractHttpSessionCollection.exit(AbstractHttpSessionCollection.java:799)
    at com.tangosol.coherence.servlet.AbstractHttpSessionCollection.exit(AbstractHttpSessionCollection.java:696)
    at com.tangosol.coherence.servlet.glassfish31.CoherenceWebSessionManager.exit(CoherenceWebSessionManager.java:536)
    at com.tangosol.coherence.servlet.glassfish31.CoherenceWebSession.unlockForeground(CoherenceWebSession.java:451)
    at org.apache.catalina.connector.Request.unlockSession(Request.java:4222)
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:342)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
    at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317)
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
    at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:860)
    at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:757)
    at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1056)
    at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:229)
    at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
    at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
    at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
    at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
    at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
    at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
    at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
    at java.lang.Thread.run(Thread.java:722)
We want to know if we are missing something in our configuration. We are using com.tangosol.coherence.servlet.AbstractHttpSessionCollection$GlobalScopeController. The session-cache-config.xml file has only this item added:
        <replicated-scheme>
            <scheme-name>default-replicated</scheme-name>
            <service-name>ReplicatedCache</service-name>
            <backing-map-scheme>
                <class-scheme>
                    <scheme-ref>default-backing-map</scheme-ref>
                </class-scheme>
            </backing-map-scheme>
        </replicated-scheme>
        <class-scheme>
            <scheme-name>default-backing-map</scheme-name>
            <class-name>com.tangosol.util.SafeHashMap</class-name>
        </class-scheme>
Any help or light would be greatly appreciated. Thanks in advance.

Answer 1

Depending on the version of WebLogic (which unfortunately I cannot remember off of the top of my head), you don't have to use the installer, because WebLogic has added built-in Coherence*Web support. Have you checked the WebLogic documentation for using Coherence*Web?
Peace,
Cameron Purdy | Oracle Coherence
http://coherence.oracle.com/